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Davis EE Zhang Q Liu Q Diplas BH Davey LM Hartley J Stoetzel C Szymanska K Ramaswami G Logan CV Muzny DM Young AC Wheeler DA Cruz P Morgan M Lewis LR Cherukuri P Maskeri B Hansen NF Mullikin JC Blakesley RW Bouffard GG;NISC Comparative Sequencing Program Gyapay G Rieger S Tönshoff B Kern I Soliman NA Neuhaus TJ Swoboda KJ Kayserili H Gallagher TE Lewis RA Bergmann C Otto EA Saunier S Scambler PJ Beales PL Gleeson JG Maher ER Attié-Bitach T Dollfus H Johnson CA Green ED Gibbs RA Hildebrandt F 《Nature genetics》2011,43(3):189-196
Ciliary dysfunction leads to a broad range of overlapping phenotypes, collectively termed ciliopathies. This grouping is underscored by genetic overlap, where causal genes can also contribute modifier alleles to clinically distinct disorders. Here we show that mutations in TTC21B, which encodes the retrograde intraflagellar transport protein IFT139, cause both isolated nephronophthisis and syndromic Jeune asphyxiating thoracic dystrophy. Moreover, although resequencing of TTC21B in a large, clinically diverse ciliopathy cohort and matched controls showed a similar frequency of rare changes, in vivo and in vitro evaluations showed a significant enrichment of pathogenic alleles in cases (P < 0.003), suggesting that TTC21B contributes pathogenic alleles to ~5% of ciliopathy cases. Our data illustrate how genetic lesions can be both causally associated with diverse ciliopathies and interact in trans with other disease-causing genes and highlight how saturated resequencing followed by functional analysis of all variants informs the genetic architecture of inherited disorders. 相似文献
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